植物利用碳酸氢根离子的特征分析

以构树、椿树、金银花、盆肤木等植物为材料,分析植物的碳酸酐酶活力与δ13 C的关系,结果表明,碳酸酐酶的活力与δ13C值呈显著的正相关.以甘蓝型油菜、诸葛菜、构树、桑树为实验材料,通过测定植物叶片稳定碳同位素组成以及光合速率来获得植物利用碳酸氢根离子的信息,结果表明,构树和诸葛菜碳酸氢根离子的利用能力明显地大于桑树和甘...

The Characteristics of Bicarbonate Used by Plants

The relationship between foliar carbonic anhydrase activity and δ13C of Broussonetia papyrifera,Toona sinensis,Lonicera japonica,Rhus chinensis and other plant species was analyzed.The results showed that there was a significantly positive correlation between foliar carbonic anhydrase activity and δ13C.The information on bicarbonate used by plants was obtained via determining foliar stable carbon isotopic composition and net photosynthetic rate of Brassica napus,Orychophragmus violaceus,Broussonetia papyrifera and Morus alba.The results showed that the bicarbonate-use capacity of Broussonetia papyrifera and Orychophragmus violaceus was greater than that of Morus alba and Brassica napus.The variability of foliar carbonic anhydrase activity and δ13C in Broussonetia papyrifera,Brassica juncea and Orychophragmus violaceus was studied.The results showed that the δ13C values of Broussonetia papyrifera,and Orychophragmus violaceus indicated greater variability.The bicarbonate-use capacity of plants was related to foliar carbonic anhydrase activity and the adaptability to karst,and plants can use bicarbonate as inorganic carbon sources,alternatively.